Zorester b



(No Model.)

Z. B. GOES. FEED MECHANISM FOR LATHES.

No. 462,792. Patented Nov. 10,1891.

Inventor WWW. 3%

Witnesses U. (f, ASKWLW Attorney ii NITED STATES PATENT OFFICE.

ZORESTER ll. GOES, OF HAMILTON, OHIO, ASSIGNOR TO THE NILES TOOL VORKS,OF SAME PLACE.

FEED MECHANISM FOR LATHES.

SPECIFICATION forming part of Letters Patent No. 462,792,dated November10, 1891.

Application filed July 6, 1 .891- Serial No. 398,490. (No model.)

To aZZ whom it may concern.-

Be it known that I, ZORESTER B. Cons, of Hamilton, Butler county, Ohio,have invented certain new and useful Improvements in Feed Mechanism forLathes, of which the following is a specification.

This invention pertains to improvements in the feed mechanism ofengine-lathes, and the improvements will be readily understood from thefollowing description, taken in connection with the accompanyingdrawings, in which- Figure l is an end elevation of a lathe providedwith feed mechanism exemplifying my improvements; Fig. 2, afrontelevation of this mechanism,and Fig. a front elevation of the rearpulley M.

In the drawings, A indicates the lathe-bed; B, the head-stock; C, thelathe-arbor; D, the lead-screw; E, the feed-rod; F, a pinion to bedriven positively by the lathe-arbor, the exemplifying drawing showingthis pinion as secured directly to the arbor; G, a tumbler fitted forangular adjustment with reference to the axis of the pinion F; II, aswinging change-gear mounted upon a stud carried by the tumbler, thischange-gear gearing with the pinion F; J, a change-gear on the leadscrewin position to be engaged by the swinging gear when that gearis swungforward; K, a stud supported by the lathe-bed to the rear of thevertical plane of the pinion F; L, a pinion mounted on this stud andadapted to be engaged by the swinging gear II when that gear is swungrearwardly, as indicated in Fig. 1 .M, a belt-pulley, -shown as havingtwo steps, fast with the pinion L; N, a slip-gear splined to thelead-screw and adapted to slide thereon a distance equal at least to thelength of the gear-teeth; O, a gear fast on the feed-rod and engaged bythe slip-gear N when the slip-gear is moved into active position; I, astud supported by the lathe-bed near the feed-rod; Q, a pinion mountedthereon and engaging the gear 0; R, a pulley fast with pinion Q andshown as having two steps to match the pulley M, pulleys M and R beingin the same plane, so that a belt may engage them both.

\Vhen the lead-screw is to be employed in screw-outtin g, then thechange-gears F, H, and J are to be selected and adjusted in an obviousmanner. The slip-gear N being pulled to the left, as shown in Fig. 2,the motions are transmitted no farther than to the-lead-screw, so far asthe present mechanism is concerned. If it be desired to employ thefeed-rod for feeding purposes, then the slip-gear is pushed to theright, whereupon the feed-rod revolves at a relative velocity determinedby the proportion of gearing at O and N and under control by selectionof change-gears. As the feed-rod rotates the pulley R also rotates anddrives the pulley M idly. Having under the above-mentioned conditions acertain speed of rotation for the feed-rod adapted to certain classes ofwork and desiring a slower speed without the necessity for changinggearing, we have only to push the swinging gear H to the rear, therebydisconnecting it from the lead-screw and engaging it with the pinion L,whereupon the motion becomes transmitted from the swinging gear to gearL, causing pulley M to turn the belt, which will be upon pulleysM and R,thereby transmitting rotary motion to the feed-rod at a rate of speeddue to the proportion of parts, and while the feedrodis thus beingdriven through the belt the slip-gear N may, if desired, be moved toidle position, so that the lead-screw need not rot'ate. By this systemit becomes possible to change from one speed of feed to another speed'offeed by a simple swinging motion of a gear, and to have the heaviestfeeding motion transmitted positively through gearing while the lighterfeeding motion is through a belt. The transition from lead-screw work tobelt-feed is made by a simple motion of the swinging gear, and thelead-screw may, if desired for feeding purpose, be driven through themedium of the belt. In the construction shown in the drawings the beltmay be shifted on the steps of the pulleys, thus giving two changes offeeding by this means. Disregarding this last manner of change, thesystem gives four feeding speeds without changing gearsna1nely, one bymeans of the leadscrew when driven direct from the swinging gear, one bymeans of the lead-screw when driven through the belt and the gearing Oand N, one by means of the feed-rod when driven by means of the gears Jand N, and 10c one by means of the feed-rod when driven through gear Land the belt.

It will be understood by those skilled in the art that the mounting ofthe pulley R on a stud and gearing it to the feed-rod is a mereexpedient for getting the pulley farther removed from the lead-screw, soas to give more room for the parts.

I claim as my invention 1. In feed mechanism for lathes, thecombination, substantially as set forth, of a lathearbor, a gear driven.thereby, a tumbler mounted to swing concentric to such gear, alead-screw, a gear thereon, a gear and pulley mounted in fixed position,a swinging gear mounted on said tumbler and adapted to engagealternatively with said lead-screw gear and said pulley-gear, afeed-rod, and a pulley arranged to rotate the same and disposed inposition to be driven by belt from the beforementioned pulley.

2. In feed mechanism for lathes, the combination, substantially as setforth, of a lathearbor, a gear driven thereby, atumblerswing ingconcentric with such gear, a feed-rod, a pulley arranged to turn suchfeed-rod,a pulley supported in fixed position and arranged to be beltedto the first-mentioned pulley and provided with a gear, a gear arrangedto transmit rotary motion to the feed-rod, and a swinging gear mountedon said tumbler and adapted to swing into gear alternatively with saidlast mentioned gear and said pulley-gear.

3. In feed mechanism for lathes, the combination, substantially as setforth, of a lathearbor, a gear driven thereby, a tumbler arranged toswing concentric with such gear, a swinging gear carried by suchtumbler, a pulley and gear mounted in fixed position and adapted to bedriven by said swinging gear when swung to proper position, a leadscrew,a gear thereon adapted to be engaged by said swinging gear whenswunginto proper alternative position, a slip-gear on the leadscrew, afeed-rod, a gear thereon adapted to be engaged by said slip-gear, and apulley arranged to turn the feed-rod and be belted from thefirst-mentioned pulley.

4. In feed mechanism for lathes,the combination, substantially as setforth, of a lathearbor, a gear driven thereby, a tumbler arranged toswing concentric with such gear, a swinging gear carried by saidtumbler, apulley and gear adapted to be driven by said swinging gearwhen swung into proper alternative position, a lead-screw, a gearthereon adapted to be driven by said swinging gear when swung intoproper position, aslip-gear on the lead-screw, a feed-rod, a gearthereon adapted to be engaged by said slip-gear, a pinion engaging thegear on the feed-rod, and a pulley fast with said pinion and adapted tobe belted from the firstmentioned pulley.

ZORESTER B. GOES.

Witnesses:

JAMES WV. SEE, J. N. SLAYBACK.

